You need 6 66 square feet of attic ventilation.
14 roof turbin square foot covrage.
Whirlybird 14 in.
Mill finish internally braced wind turbine this roof mounted turbine helps ventilate a home for a more comfortable living environment and features a lightweight all aluminum construction.
A small 12 inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space.
This formula is traditionally used for static roof vents which are rated for net free area in terms of square inches.
Thus if your attic is 450 square feet you need roof vents equaling 3 square feet.
Item 790069 model aic14bl.
There are also gable and roof fans which actively pull the hot air out of the attic.
Aluminum internally braced turbine head in mill model ath14imi view the master flow mechanical vents 43 49 43 49.
Get free shipping on qualified roof turbines or buy online pick up in store today in the building materials department.
The 14 big whirly turbine moves 37 more air than the 12.
A single 14 inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1 342 cfm of air.
The 12 turbine is available in aluminum and galvanized.
Lomanco is the home of the one and only whirlybird turbine ventilator the all weather turbine vent whirlybird turbines offer all of the essentials for energy savings and are geared toward going green.
Let s go through an example for a home with 2000 square feet of attic floor space you ll first divide 2000 by 300 2000 300 6 66.
For the pro.
Build your roof empowers you to select each layer and component that goes into your total protection roofing system so that you get the roof you want to.
Now take the square footage number and multiply it by 144.
Take this number and divide it by three hundred.
This will give you square inches instead of square feet.
A roof turbine ventilator requires only the wind to work.
These vents aren t one size fits all though.
33 4x16 pieces 20 6x16 pieces 14 8x16 pieces.
Lomanco wind turbines are available in three sizes 8 12 and 14.
The quotient is the amount of ventilation you will need for your attic.
Master flow 14 in.
53 lineal feet required.
Thd sku 435228.